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JOHN DE FRAIN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR 'IO HIMSELF AND WILLIAM CALLAHAN, OF SAME PLACE.-

Leners Patat No. 95,664, dated october 12, 1869.

COOKING-STOVE.

The Schedule referred to in these Letters Patent and making part of the same.

object of this arrangement is to prevent the opening of the door taking up any of the hearth-room, as in ordinary stoves, and thus to retain the whole areaof the hearth for the reception of things used in cooking. 1t is also for obtaining an equal draught throughout the entire range of the grate.

In the second place, it consists in the construction -of the hot-air lines, at the bottom of the oven, with vertical plates cast with sectional pieces of the bottom, so as to obtain additional heating-surface, for the complete heating of the lower part of the oven, to acf complish more perfect cooking.

In the third place, it consists in making these dues detachable, for the purpose of easily cleaning out dust and ashes carried by the draught, land lodged on the bottom of the stove beneath the oven.

In the fourth place, it consists in the construction of the bottom-plate of the stove with curved plates, for giving an easy turn to the air in passing into the return hot-air-flue. f

And in the fth place, the improvement consists in the combination of a tube leading from the bottomv of the stove to the interior of the smoke-pipe, whereby the hot air is conveyed from beneath the stove, to

prevent the oor being burned or heated, and the drang-ht through the smoke-pipe is increased.

To enable persons skilled in the art to which my improuements appertain to apply them to practice, I will now proceed to give a full and exact description of the same.

In the accompanying drawings, which make a part v of this specicationp Figure 1 is a front elevation of the improved stove. Figure 2 is a vertical section through the middle of the stove.

Figure 3 is across-section at the line a b of fig. 1.

Figure 4, on Sheet No. 2, is a reverse plan of the stove, with the bottom-plateA removed.

Figure 5 i's a top View of the bottom-plate A.

Figure 6 is an isometrical View of the'midd1e hotair flue I'. I

Figure 7 is a similar view of the re-door G.

Like letters in all the figures indicate the same parts.

The drawings represent a Hat-top stove. f The improvements are, however, applicable to other kinds of stoves.

A is the bottom-plate`, and A' the top-plate. B B are the side-plates; C, 'the back-plate; and I), the front-plate, beneath the hearth E.

F is the front-plate above the hearth, with which is connected the door G, which has a sliding vertical movement between the guide-strips a at, for the regulation of the draught to the ire,` the door being held by means of the pawl H, which falls into connection with either of the openings b in the plate F, as may be required, as seen in fig. 2, A rack, if desired, may

Vtake the place of the said openings b.

The door is held in place against the plate F by means of the screws c c, which pass throughthe crossslots l d, at the ends of the door. The said door is shown in detail in fig. 7.

lBy this arrangement of the fire-door, an equal n draught to the lire is obtained throughout the whole .breadth of the tire-place, and the hearth is left clear .to sit anything on, whereas, in the usual arrangement` of the iire-doors, when they are but partly open the draught is very unequally distributed, and the hearth is obstructed, so as to often occasion much inconvenience. To remedy the latter evil, without getting rid` of the former, the re-docrs have sometimes been arranged to move laterally. But this has been found to be objectionable, as by their projecting out beyond the sides of the stove, they are liable to catch the attendants clothes.

I construct the hot-'air ues I I at the bottornbfV the oven J, and which communicate with the vertical hot-air iues K K, and the'central return-due I', with a horizontal plate, e, and Vertical side-plates j' f, in one casting, the combined horizontal plates e making the whole breadth of the main portion of the bottom A. The object of this is to get a considerable additional heating-surface for the bottom ofthe oven, and thus overcoming the difficulty usually. experienced, By means of this construction of the flues, I obtain all the heat required, having ina No. 8 stove over four hundred square inches of heating-surface in addition.

,'lo overcome the diiiiculty of cleaning out the ilues, I make the said fines I I and I' removable, by providing their vertical sides f with lugs g, as seenin gs. 3 and 6.

The lugs on the said sides g of the central ue I', coming under the lugs on the contiguous sides of the lues I I, the screw-bolts L L hold all the lines firmly peculiar arrangement of the plates is shown in fig. 5. The object of these plates is to give a free turn tothe air as it passes from the lues I I into the return-due 1', to `prevent it lodging in the corners beneath the oven J. These plates, by not being projected to"the bottom A of the oven, admit of a sufficient quantity of air passing over their upper edges, to heat the corners of the bottom of the oven, without impeding the draught.

There is a tube, M, connected at its lower end with the bottom A of the stove, and at its upperend with the smoke-pipe N,-.by means of the bridge 0 in the collar P, for carrying oi' the hot air from beneath the stove, to prevent the burning or heating of the licor, as seen in-gs. 2 and 3. This arrangement of the said tube M with the smoke-pipe N also serves to increase the draught through the latter.

I claim as my invention- 1. The vertical sliding door G, combined and arranged with the front plate F, substantially in the manner and for the purposes herein described.

2. The construction of the ues I I and I', with'vertical side-plates ff, in connection with the horizontal plates e, for gaining additional heating-surface, as above specified. 

